??? ??? ??? ??? ? ?? ??? ?? ???? ??? ??? ????. ??? ?? ??? ???? ???? ???, ?? ??? ??? ?????.???? ??. ???? ????? ??????? ??? ?? ???? ?????.?????? ????????? ?? × ?????? ?? × ????????? ????? × ?????? ????? × ????????? ?? ???? ?? × ?? ?? × ???? ????? × ?? ????? × ???? ???There won't be any set periods for examining the composition of your index,